gurns ugrns gruns rguns urgns rugns gunrs ugnrs gnurs ngurs ungrs nugrs grnus rgnus gnrus ngrus rngus nrgus urngs rungs unrgs nurgs rnugs nrugs gursn ugrsn grusn rgusn urgsn rugsn gusrn ugsrn gsurn sgurn usgrn sugrn grsun rgsun gsrun sgrun rsgun srgun ursgn rusgn usrgn surgn rsugn srugn gunsr ugnsr gnusr ngusr ungsr nugsr gusnr ugsnr gsunr sgunr usgnr sugnr gnsur ngsur gsnur sgnur nsgur sngur unsgr nusgr usngr sungr nsugr snugr grnsu rgnsu gnrsu ngrsu rngsu nrgsu grsnu rgsnu gsrnu sgrnu rsgnu srgnu gnsru ngsru gsnru sgnru nsgru sngru rnsgu nrsgu rsngu srngu nsrgu snrgu urnsg runsg unrsg nursg rnusg nrusg ursng rusng usrng surng rsung srung unsrg nusrg usnrg sunrg nsurg snurg rnsug nrsug rsnug srnug nsrug snrug
Note: these 'words' (valid or invalid) are all the permutations of the word gurns. These words are obtained by scrambling the letters in gurns.